Fourths to jacob w



VW; H. HOLDER.

CUTTER HEAD.

No. 560,166.v Patented May 12, 1896.

* v Y fl UNTTED STATES PATENT OFFICE.

WILLIAM II. HOLDER, OF SORANTON, PENNSYLVANIA, ASSIGN OR OF THREE- FOURTIIS TO JACOB IV. WIALTERS, RICHARD H. HEFFELFINGER, AND SAMEL K. MCKEEI'IAN, OF SAME PLACE.

CUTTER-HEAD.

SPECIFICATION forming part of Letters Patent No. 560,166, dated May 12, 1896. Application filed December 19, 1895. Serial No. 572,652. (No model.)

To all whom it may concern: usual longitudinal slots c, through which the Be it known that I, VILLIAM H. HOLDER, cutting-knives are projected, and the end of a citizen of the United States of America, resaid cylinder which fits into the annular siding at Scranton, in the county of Laclragroove b is provided on opposite sides with 5 wanna and State of Pennsylvania, have inprojecting lugs c', which iitinto correspond- 55 vented certain new and useful Improvements ing recesses in the head B to hold these parts in Cutter-Heads; and I do hereby declare the in proper relative position. following to ...be a full, clear, and exact de- Theheads Band Bare provided with transscription of the invention, such as will enable verse grooves or recesses b2, located on opporo others skilled in the art to which it appertains site sides of their center a short distance be- 6o to malte and use the same, reference being yond the opening through which the drivinghad to the accompanying drawings, and to shaft A passes, and with these grooves or reletters of reference marked thereon, which cesses engage the ends of the cutter-stocks D, form a part of this specification. hereinafter described, the transverse grooves 15 The object of this invention is to provide in the head B being intersected by slots b3, 65 an improved cutter-head consisting of a cas through which the adjusting-screws of the ing carrying a pair of movable cutter-stocks, cutter-stocks pass. which are engaged bylugs on the supporting The cutter-stocks are 'each made up of semior driven shaft, so that the rotation of said circular end pieces d and d',which are connecteo shaft in either direction will project one of ed at theirouter ends by a plate d2, formed in- 7o the cutters beyond the casing and retract the tegral therewith, the end pieces being proother. vided on their outer side with transverse The invention consists in the construction splines or webs d3, which engage the transand combination of the parts, as will be hereverse grooves b2 in the heads B and B. inafter fully set forth, and particularly point- The end pieces of the cutter-stocks are pro- 7 5 ed out in the claims. vided in their straight edges with semieircu- In the accompanying drawings, forming lar recesses d, which receive the driving-shaft part of this specification, Figure 1 is a longi- A and permit lateral movement of the cuttertudinal sectional view through the cutterstocks within the casing, and in the base of 3o head. Fig. 2 is a transverse sectional view these semicircular recesses are formed re- 8o on the line 2 2 of Fig. 1. Fig. 3 is an elevacesses d5, with which engage lugs a2, projecttion of one of the cutter-stocks detached; ing from opposite sides of the driving-shaft and Fig. 4. is a detail view of the casing, show- A, so that the rotation of said shaft in either ing one of the heads disconnected. direction will inove the cutter-stocks in op- A designates the shaft upon which the cutposite directions, the limit of movement be- S5 ter-head is mounted, said shaft being proing governed by the sizeof the recesses d4, Avided with a rigid collar a and an adjustable and such movement projecting one of the collar a', between which the cutter-head is cutters or knives and retracting the other, for clamped to hold the parts thereof in relative the purpose hereinafter mentioned.

4o position, as hereinafter described. The cutter-stocks are preferably provided 9o The cutter-head consists, in part, of a caswith adjustable means for connecting thereto ing made up of the heads B and B, having cutters or knives of different widths, and for central openings through which the shaft A this purpose the cutter-stocks are each propasses, the heads being connected to each vided with a sliding plate E connected to the 45 other by a cylinder O, one end of which iits inner end of an adjusting-screwE,said screws 95 into an annular recess or groove ZJ in the head passing through the slots b3 in the head B',

3', while the other end is bulged outward or and through threaded apertures in the adenlarged to fit over the outer edge of the joining end pieces of the cuttcr-stocks, the head B and inwardly-projecting fiange b' knives or cutters F being placed between the 5o thereon. The cylinder is provided with the opposite end of the cutter-stocks and sliding roo plates E, the parts being provided with beveled recesses to receive the beveled edges of said knives.

In operation when the shaft is rotated in the direction of the arrows, Fig'. 2, the lugs a2 will act upon the cutter-stocks to move the one on the right, so that the knife carried thereby will be retracted within the cutterhead or casing, while the other cutter-stock will be moved to project the cutting edge of its knife beyond said casing or in position to cut. IVhen the rotation of the shaft is reversed, the lugs thereon will act to project the knife at the right and retract the one at the left, Fig'. 2. ByA this construction and arrangement a board may be passed through the planing' or cutting machine, after which the feeding mechanism and shaft A are reversed and the board passed back through the machine and operated upon by the other cutting-knife, the cutting edges of the knives being properly arranged for this purpose.

It will be noted that though I have shown cutting-knives with straight edges, any kind or style of knife can be used with the improved cutter-head hereinbefore described.

IIaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a cutter-head, the combination, of the cutter-stocks in sliding engagement with the head and carrying' cutters adapted to be projected beyond one side of said head; together with lugs on the driving-shaft and engaging the cutter-stocks to move them alternately in opposite directions, for the purpose set forth.

2. In a rotary cutter, the combination, of the cutter-head having heads B and B provided with transverse recesses or grooves; cutter-stocks provided at their ends with webs or splines in engagement with said transverse recesses and carrying cutters adapted to be projected beyond one side of said cutterhead; together with lugs on the driving-shaft and in engagement with the cutter-stocks for moving them alternately in opposite directions, for the purpose set forth.

In a rotary cutter, the combination, of the cutter-head having heads I3 and B provided with transverse recesses or grooves; cutter-stocks mounted between said heads and provided. at their ends with webs or splines in engagement with said transverse recesses, the cutterstocks being provided with recesses and carrying' cutters adapted to be projected beyond one side of the cutterhead; and lugs on the driving-shaft in engagement with the recesses in the cutterstoeks for moving' them alternately in opposite directions, for the purpose set forth.

et. In a rotary cutter, the combination with the driving-shaft A having lugs projecting` from opposite sides thereof, of heads B and B mounted on said shaft and held in place by collars a and a', said heads being provided with transverse grooves; cutter-stocks mounted between the heads and provided at their ends with webs or splines in engagement with the transverse recesses, the lugs on the driving-shaft engaging recesses in the cutterstoeks, substantially as shown and for the purpose set forth.

5. In a rotary cutter, the combination with the driving-shaft A having lugs projecting from opposite sides thereof, of the heads B and B mounted on said shaft and provided on their inner sides with transverse recesses or grooves; a cylinder connecting the heads to each other; and cutter-stocks mounted in the cylinder between the heads B and B/ and provided with webs or splines in engagement with the transverse recesses therein, the eutter-heads having' .recesses with which the lugs on the shaft engage, substantially as shown and for the purpose set forth.

G. -In a rotary cutter, the combination with the driving-shaft A having lugs projecting from opposite sides thereof, of heads, as B and B', mounted on said shaft, and cutterstocks located between the heads and in movable engagement therewith, the cutter-stocks having recesses which receive the shaft and permita limited movement of said cutterstocks, the cutter-stocks being also provided with recesses with which the lugs on the shaft engage, substantially as shown and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. HOLDER. lllitnesses:

W. L. LAWRENCE, Isaac A. RnIcHann'r. 

